Radiohead's Thom Yorke, by Dan DeSlover/Variance

Radiohead kicked off their North American tour Friday night (July 6) in Chicago.

It was the first of two sold-out nights at United Center. But it was also a bit of an unusual affair, as Thom Yorke and Co. don't technically have a new album to promote (last month actually marked two years since the release of their last full-length, 2016's A Moon Shaped Pool).

That perhaps allowed them the freedom to perform a career-spanning set, with songs from each of their nine previous studio albums among the setlist, including a rare performance of "Blow Out" from their debut album Pablo Honey, last performed live during their 2008 tour in Tokyo, in support of album No. 7 In Rainbows.

Also among the night's gems were "Paranoid Android" (OK Computer), "Everything in Its Right Place" (Kid A), "Bloom" (The King of Limbs) and "15 Step" (In Rainbows), the latter of which was part of the band's first of two encores.

While Radiohead's future plans remain a mystery, there is no question about their dominance of the stage, which was evidenced with a massive first night in the Windy City, stretching two-plus hours, including both encore performances. 

Meanwhile, Yorke has recently been teasing new solo music. And for the immediate future, the band will spend the next month on the road, with stops in New York, Montreal, Toronto, Detroit, Boston and Philadelphia among the select cities where they'll perform.

See photos from their Chicago night 1 show and watch their "Blow Out" performance above.